Top 10 User-Submitted Words, Vol. 3
a network of computers infected with a virus that conducts coordinated scanning activity to compromise the security of and infect other computers
"Botnets large networks of malware-infected PCs remotely controlled by criminals are a serious problem on the Internet. The spam, phishing attacks, and malware that these networks send accounts for a massive proportion, in excess of 80 percent, of e-mail traffic." Wired.com, Feb. 26, 2010
J.C. Moore, PA
One of the disturbing aspects of botnets: if your computer is infected, you may not be aware that it's serving as a botnet agent.
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